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(Model.) 3- Sheets-Sheet 1.

J. L. & W. E. ALEXANDER. Shingle Shaving Machine.

No. 234,217. Patented Nov. 9, |880.

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(Model.) 3 Sheets--Sheet 2.

J. L. & W. E. ALEXANDER.

Shingle Shaving Machine.

No.,234,217. Patented Nov. 9, 1880.

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3 Sheets-Sheet 3.

(Model.)

J. L. 8L W. E. ALEXANDER. Shingle'Shaving Machine.

No. 234,217. Patented Nov. 9, 1880.

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M f' /f d hf Wzl/'n' .55e1 bwenar IINITED STATES PATENT OFFICE...

JOHN L. ALEXANDER AND WILLIAM E. ALEXANDER, OF LEBANON, IND.

SHlNGLE-SHAVING MACHINE.

SPECIFICATION forming part of Letters Patent No. 234,217, dated November 9, 1880.

Application led July 3, 1880. (Model.)

To all whom t may concern:

Be it known that we, JOHN L. ALEXANDER and WILLIAM E. ALEXANDER, citizens of the United States, residing at the city of Lebanon, in the county of Boone and State of Indiana, have invented a new and useful Shingle-Shaving Machine, of which the following is a specitication.

This invention relates to an improved machine for dressing shingles, and has for its object to provide an apparatus by means of which a shingle may be shaved on both sides simultaneously to the desired bevel or taper from the butt to the front edge, as more fully hereinafter specified. These objects we attain by the mechanism illustrated in the accompanying drawings, in which- Figure l represents a side elevation of our improved apparatus; Fig. 2, a horizontal sectional view; Fig. 3, a top view of the frame carrying the working parts of our invention; Fig. 4, a view ot' one of the cutter-carriers and sliding blocks detached, with a portion of the frame broken away, showing one ofthe bearings in which is journaled the rollers; and Fig. 5 represents a vertical sectional view of the knife-carrying frames, showing the operation of the shingle-support.

The letter A indicates the frame of the machine, which may be constructed of wood or any other suitable material, and which is mounted on legs B at each end. At or near one end of the frame is mounted the drivinggear ofthe machine, consisting of the driving-shaft D and y-wheel E, with pinion F intermeshing with cog-wheel Gr, mounted on the shaft H, journaled in bearings I upon the frame. The {Iy-wheel E provides for a steady movement when the cutters meet with knots and the like.

The letter K indicates a frame secured rigidly to the forward end ot' the frame A. The said frame is constructed of two rectangular side sections, h, which are clamped together against intervening blocks L by means of through-bolts M and N in such manner that the forward ends of the sections will gradually approach each other for the purpose of gradually bringing the cuttin g-knives together 5o as they are moved forward, as more fully hereinafter specitied. The front ends ofthe sections are slotted longitudinally at O for the passage of the through-bolts M, so that the distance between the ends of the sections may be varied to vary the bevel of the shingle. The upper and lower bars of the sections lz are provided with ways P, upon which are adapted to slide the cutter-carriers, the said carriers consisting each of a frame, Q, secured to a sliding block, R, the said frame Q being formed at its end with lugs S, which embrace the ways P on the sections h.

The letter T indicates the knives, which are secured to heads U attached to the sliding frames, and the said heads are secured each to one end of the bifurcated pitman V, which is connected to the crank-pin X on the gearwheel. The hea-dsUhave inclined faces, which throw out the shavings as the cutters shave the shingle.

To the upper and lower edges, near the ends of the sliding blocks R, are secured the springbars Y, to the free ends of which are attached the slides A', adapted to move in transverse ways B' in the frame Q. The free ends of said slides are provided with bearings for the journals of the upright rollers C', which are adapted to bear against opposite sides of the shingle to be dressed, and by means ot' the yielding pressure imparted to them by the spring-bars to adjust themselves to the bevel of the shingle, so as to firmly clasp and hold the same.

The letter D' indicates a stop interposed between the two blocks between the front sections ofthe frame K, the said stop being provided with a grooved bearing at its edge, against which the shingle rests while being shaved or dressed.

The letter E' indicates a grooved support, which is pivoted to a hinged frame, F', directly under the frame K. The said support is provided with an arm, G', from which extends a cord, H', passing over a pulley, I', and provided with a weight, K'.

The bottom edge of the shingle rests in the groove of the support E', which is held in position up against the bottom edges of the sliding blocks R by the weighted cord attached to the arm Gr', and as the knives approach the IOO shingle the heads U strike the incline of thc open frame 1*", which is hinged to the support E' at a point near the arm G', and forces the end of the support, which is made in the form of a chute, downward in a tilting position, as shown b v dotted lines in Fig. 5, the free end being held up against the sliding blocks by means of the weighted cord and arm, so that on the return ot the knives, which also carry with them the shingle, the shingle is released,

and the end dropping into the chute end ot' the support, it slides through the open frame F and drops to the ground. and the constant gravital force of the weight li acting upon the cord serves to throw the support back into position for another operation.

The througlrbolts lll are provided with rub. ber springs L', by means ot' which the l'ramesections are permitted toyield when the knives meet with any unusual obstructions in the shingles, in order to prevent injury.

The operation of our invention is l'ollows; The shingles to be dressed are dropped into the opening at the top ot' the frame K. the t'orward edge ot' the shingle resting in the groove in the edge ot' the stop and the lower edge in the grooved support, which is held in normal position by lneans of theI cord and weight. The sliding knii't-carriers heilig ptit in operation by the gearing, the knives shave the shin gles from the butt to the i'ront edge on the forward stroke, being caused to approach each other to cut the desired bevel b v means of the Ways on the frame K. Upon thc return-stroke the Shingle is drawn back b v the knives, forcing the support downward until it is cleared, when the finished shingle will drop out ofthe machine at the bottom.

Having tlms described our invention, what we. claim, and desire to secure by Letters Pat ent, is-

l. In a machine for dressing shingles, the fratrie having converging sections provided with ways, the grooved stop, and the independent or duplicate sliding frames provided with knife-carriers adapted to travel on the ways, whereby the knives are caused to approach each other on theirforward movement, in combination with the rollers mounted between the knife-carrying frames andjournaled in transverse slides, and the spring-bars for the purpose of operating said rollers, substantially as specified.

2. In combination with the krufe-carryingr frames and mechanism for operating the same, the support hinged to the open frame, said i'rame being pivoted between the knife-carrying t'ranles aml the gravital weight, the whole arranged to operate substantially as specified.

3. The cutter-heads having inclined faces, as shown, to throw out the shavings, and cutters or knives, combined with the reciprocatingframes, the bearing-rollers,thespring bars, and grooved stop I), as and for the purposes specitied.

4. In a shingle-Imtchine, the combination of' the adjustable frames having ways or guides, the grooved stop for holdingthe shingle to the knives, thc reciprocating knife-carriers, the rollers, the knife-blades, the pivoted support, the bit'urcated frame, and the weight, all constructed and arranged to operate substantially as specified.

JOHN L. ALEXANDER. WILLIAM E. ALEXANDER. \\'itnesses:

II. C. CARTER, T. J. CAsoN, Jr. 

